Thanks xs4reak, I realized that already.
Reason I asked is I'm a bit frugal and thought why use two when you only need to use one. I'm trying to get an order ready to submit before the weekend and was wondering whether HK sold the little metal pieces they use to attract the magnet, if not I' ll just go the route you suggested or fabricate my own.
I used some of these for a magnetic switch on a flight simulator stabilizer trim wheel of an A320 to find the position reference upon starting up the flight control system. Darn cheapest solution I ever did in 23 years at the company! he he he
I cant see you having any success gluing Thea's to foam.!!! even if you could it would rip the foam out before releasing . You could probably get away with gluing a small piece of ply to the foam and then the magnet to that. It's all about surface aria. I always use CA thick . Good luck
I've glued these with both thick, thin and "gap filling" CA, works like a charm. - I suppose it would depend on the surface you fasten them on. On a balsa frame or similar I would definately go for CA, because it will get drawn into the wood. On an uneven surface, like foam, epoxy would likely be a better choice, simply because CA does not fill the relatively large gaps in foam very well. Alternatively there is contact glue (the kind you put on both surfaces, then let dry and press firmly togeth
If your magnet keeps pulling off put a thin separator layer like cardboard on top to lower it's strength. also instead of another magnet or a Metal plate, a screw head filed flat will often do the job.
If you put 2 carbon tubes along the fuselage and 2 carbon rods into the wings to slide those rods into the tubes when connecting wings to the fuselage, then, I think, 5 magnets for each wing could held it ...
I was lucky.. but it seem that all their(HK) air craft has these magnets in them. I am pretty sure that HK uses them within there craft. I don't know when they had restock.. but I can tell you that they don't stay instock for long.
Hi there, I just placed an order on october 27th and a few days later it was reserved for me with the rest of my order. I think the stock will be refilled once in three weeks or something like that. Hope you get them soon, Greetings from holland
There are people out there using these magnets for overunity Generators so they are popular for more than just our Radio- Hobbies. This may be why stock moves well in these magnets. They are the most powerful available but not the Largest Magnets.
The magnet in the picture only looks silver because of the angle at which the photo was taken, it is just a reflection. These magnets are coated in nickel, which looks very much like copper in colour. If they weren't coated in nickel they would break too easily.
Mine were copper too, but I don't care because once I have them mounted on a plane, I don't see them anymore. And as long as they are as strong as currently, I don't see a reason to buy different magnets. Hope this helps
The reason for the plating is because the Magnets are prone to corrosion if they are not plated. Remember if you break them into smaller Magnets to seal the broken magnet surface with Paint or something similar.
Another problem is that magnets attract very tiny metal particles, and those could get into your electronics if you have them right on the receiver. Keep them away from your servos, as they are magnetic devices. Any small metal pieces in electronics can also be effected, so being on your canopy, or wings should be no problem, but don't use them to hold your ESC or Receiver in place. Keep them at least 1 inch or more away.
these are very strong.. and i mean VERY, they are so small, and they will easily hold almost any canopy down, i use a few of them to hold screws, and they attract 15 bolts, nuts, screws easily. i highly reccomend these for many things, ans at this price i would say "just buy them,, useful"
- Magnetic field: face to face contact = 0.53 Tesla 0.2mm clearance = 0.49 T 0.4mm = 0.46 T 0.6mm = 0.43 T 0.8mm = 0.41 T 1.0mm = 0.38T 2.0mm 0.30T
2 comments. Reply..
31 thumbs up!
These are extremely strong, it is best to use them with a piece of steel than with another magnet or you will have trouble getting them apart! Warning though - do not try to cut these with a dremmel or similar, the heat will demagnetise them. It is best to cut them by scoring a line then snapping (a bit like cutting glass).
1 comment. Reply..
11 thumbs up!
Strong magnets but verry fragile. I broked one just playing with. Good value overall.
No comments. Reply..
11 thumbs up!
Great strong magnets, I used 2 of them to hold down the top of my glider and later removed one, because I almost couldn't open it again.